Questions & Answers about Heiðurinn er mikill.
Because Icelandic usually puts the definite article onto the end of the noun instead of using a separate word like the.
- heiður = honor, glory (indefinite)
- heiðurinn = the honor, the glory (definite)
The ending -inn is the masculine nominative singular definite article here.
So Heiðurinn er mikill uses the definite form: the honor is great.
Heiður is a masculine noun. That matters because adjectives in Icelandic must agree with the noun they describe in:
- gender
- number
- case
Since heiðurinn is masculine singular nominative, the adjective also appears in the matching form:
- mikill = masculine singular nominative
If the noun were feminine or neuter, the adjective form would be different.